Machine for separating gold and platinum from other material.



PATENTED APR. 9, 19Q'7.

C. O. MIGHAELSEN. MACHINE FOR SEPARATING GOLD AND PLATINUM FROM OTHERMATERIAL.

APPLICATION FILED FEB. 14. 1905.

PATENTED APR. 9, 1907.-

v G. O. MIGHAELSEN. MACHINE FOR SEPARATING GOLD AND PLATINUM FROM OTHERMATERIAL.-

APPLICATION FILED PEB.14.1905.

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'No 849,553. PATENTED APR. 9, 1907.

, G. 0. MIGHAELSEN. MACHINE FOR SEPARATING GOLD AND PLATINUM FROM OTHERMATERIAL.

APPLICATION FILED FEB.14. 1905.

l1 SHEETS-SHEET 3.

PATENTED APR. 9, 1907.

G. O. MIOHAELSEN. MACHINE FOR SEPARATING GOLD AND PLATINUM FROM OTHERMATERIAL.

APPLICATION FILED FEB. 14. 1905.

PATENTED APR. 9, 1907.

C. O. MIOHAELSBN. MACHINE FOR SBPARATING GOLD AND PLATINUM FROM OTHERMATERIAL.

APPLIGAT ION FILED FEB.14. 1905.

11 SHEETSSHEET 5- PATBNTED APR. 9, 1907.

0. 0. MIGHAELSEN. MACHINE FOR SEPARATING GOLD AND PLATINUM FROM OTHERMATERIAL.

APPLICATION FILED FBB.14.1905.

11 SHEETS-SHEET 6.

No 849.553. PATENTBD APR. 9, 1907.

G. 0. MIGHAELSEN. MACHINE FOR SEPARATING GOLD AND PLATINUM FROM OTHERMATERIAL.

APPLICATION FILED FEB.14. 1905.

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G. 0. MIOHAELSEN. MACHINE FOR SEPARATING GOLD AND PLATINUM FROM OTHERMATERIAL.

APPLICATION FILED FEB.14. 1905.

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PATENT-ED APR. 9. 1907.

C. O. MIGHAELSEN. MACHINE FOR SBPARATING GOLD AND PLATINUM FROM OTHERMATERIAL.

APPLICATION TILED FEB.14.1905.

11 SHBETSSHBBT 9.

, Q, l/ nu/D46,

No 849.553. PATENTBD APR. 9, 1907.

'G. O. MIGHAELSBN.

MACHINE FOR SEPARATING GOLD AND PLATINUM FROM OTHER MATERIAL.

' APPLICATION FILED FEB. 14. 1905.

11 SHEETS-SHEET 10.

l I u 11 I fyja [Q36 r k ny f 11 7 i If m n fnvenzwt' m UQWZMMW 74?.Zt/kwLZ Bjy 772 %Md/ MACHINE FOR SEPARATING GOLD AND PLATINUM FROM OTHERMATERIAL.

APPLICATION FILED ITEM. 1905.

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UNITED STATES PATENT OFFICE.

CHARLES O MICHAELSEN, OF SALT LAKE CITY, UTAH.

MACHINE FOR SEPARATING GOLD AND PLATINUM-FROM OTHER MATERIAL.

Specification of Letters Patent.

Patented April 9, 1907.

A li ati fil d Pebrnary 14,1905. Serial No. 245,616.

l To all whom it may concern.-

Be it known that I, CHARLES 0. MICHAEL- SEX, a citizen of the UnitedStates, residing at Salt Lake City, in the county of Salt Lake.

and State of Utah, have invented a new and useful Machine for SeparatingGold and Platinum from other Material, of which the following is aspecification.

My invention relates to machines for winning gold and platinum from itsassociated clay, gravel, or gangue, and has for its object the completeelimination and saving of coarse gold, fine gold, flour-gold, as well asplatinum-dust, from gangue and other mineral-bearing material and thefinal concentration of other metallic values by a series of operationsin one machine; and it consists, first, in a series of rocker-boxes thatcan be made to operate similar to the old and wellknown rocker, with theadditional feature of capability of adjustment to describe eitheranticlinal or synclinal arcs; second, in resiliently-stationary chainsarranged immediately over the grating of a rocker-box at right anglestheretO Withother chains adjacent, but secured to and vibrating with,the oscillatory rocker-box to which they are attached, the sawing actionso produced disintegrating lumps of clay or gravel, but permittingstones arger than the openings of the grating to pass over and to waste;third, in a ball-bearing su iport near one end of each rocker-box, theball-bearings so pivoted as to permit movement in any desired direction;fourth, in a laterally-oscillating box whose bottom is of flexiblematerial and resting on cone-rollers radiating from the center of theball-bearings, supporting one end of the said box; fifth, in anamalgamating-pan whose receiving end is supported by chains and thatpart akes of the motion of a pendulum, the discharge end of the said panbeing su ported by ball bearings of similar make to t iose alreadymentioned; sixth, in a concentratingtable mounted on and supported bydumbbell pins whose ends are ball-and-socket joints, the bases beingadjustable, so that the dumb-bell pins of one side can be made to standvertical, while those of the other side stand inclined, whereby when thetable is made to vibrate laterally one edge will dip, while the otherside will rise, &c. I attain these objects by the mechanism illustratedin the accompanying drawings, in which similar characters of referenceindicate like parts throughout the several figures.

'veyer-chute F.

Figure 1 is a side elevation of my invention. Fig. 2 is a plan view ofthe same. Fig. 3-is a top view of certain arts below the line 2 conFig. 1. Fig. 4 is a f i'ont end elevation, and Fig. 5 is a rear endelevation, of the same. Fig. 6 is an enlarged vertical section, throughthe longitudinal middle of a part of the forward portion of the machine.Fig. 7 is a similarly-enlarged top view of 9. art of the forward portionof the machine with the first two conveyer-chutes removed. Fig. 8 is atop view of certain arts below the line new on Fig. 1, parts being siown as broken away to show parts below. Fig. 9 is a top view of certainparts below the line to w on Fig. 1. Fig. 10 is an enlarged bottom Viewof one of the rocker-boxes B or C. Fig. 11 is a similarly-enl arged rearend view of Fig. 10. Fig. 12 is a detail of the casting formlng thedelivery end of rocker-box B or C. Fig. 13 is a top view of a portion ofFig. 12 belowline u 11. Fig. 12. Fig. 14 is a top view of theflexiblebottomed box D, arranged to operate within a tank. Fig. 15 is abottom view of the flexible-bottomed box D showing the relativepositions of the ball-bearing O and conerollers T. Fig. 16 is a rear endView of the flexible-bottomed box I), showing the relative positions ofthe cone-rollers thereto. Fig. 17 is an enlarged to view of thebaseplate that supports the iall-bearing O and converging em s of thecone-rollers T below line 8 s on Fig. 18. Fig. 18 is a verticallongitudinal section of Fig. 17. Fig. 19 is a side elevation of theflexible-bottomed box D, the tank V being shown in vertical longitudinalsection on line 1' r, Fig. 14. Fig. 20 is a rear end view of rocker-boxB or C, showin the supporting-arcs b inclined downwardly rom theirfastenings. Fig. 21 re resents a detail of the rocker-box B or C wit 1one of the su porting-arcs declined downwardly and tie opposite arc.inclined upwardly from their fastenings. Fig. 22 is a verticaltransverse section through a pair of the dumb-bell supports R of theconveyor-chute F, showing one of the positions that may be assumed bythe said conveyor-chute F when the baseplates 1' of the said pair ofdumb-bell supports R are secured on the frame A farther apart than aretheir respective cap-plates r" secured to the under part of the saidcon- Fig. 23 is a vertical transverse section through a pair of thedumbbell supports lt of the conveyor-chute F, showing one of thepositions that can be assumed by it whenthebase-plates 1'" of the saidpair of dumb-bell supports R are placed a less distance apart than aretheir res ective capplates r. Fig. 24 is an enlarge( detail view of thependulum movement looking in the direction of arrow 1, Fi 9, from line12 '0. Fig. 25 is an enlarged detail top view of Fig. 24, showing thependulum Q and its connections. Fig. 26 is an enlarged detail, to, viewbelow line 50 50, Fig. 24, of the pend um Q and its connections. Fig. 27is an enlarged detail rear end view of the chain supporting the free endof the amalgamating-p'an E Fig. 28 is an enlarged detail, in verticalsection, on line 70 70, Fig. 25, of the supportingchain to theamalgamating- )an E, the pivoted end of the pendulum Q, an theirsupportingstud (1". Fig. 2 9 is an enlarged rear end view of the bufferq. Fig. 30 is an enlarged longitudinal section of the buffer (1 on line66 66, Fig. 29. Fig. 31 is an enlarged detail end view of one of thethree-way cam device's X. Fig. 32 is an enlarged detail side view of thesame. Fig. 33 is an enlarged detail section on line'44 44, Fig. 32, ofthe upper and lower bearing-plates separated, being parts of thethree-way cam mechanism. Fig. 34 is an enlarged plan view of one of thebase-plates or cap-plates of one of the dumb-bell supports R. Fig. 35 isan enlarged plan view of one of the base or cap plates 1' of thedumbbell supports R with one of the superposed half-plates 'r in place.Fig. 36 is an enlarged plan view of one of the half-plates r detached.Fig. 37 is a plan View of one of the base or cap plates with thehalf-plates r in place. Fig. 38 is a bottom view of the separating-tableH, showing the dumb-bell support (R) cap-plates placed atthelongitudlnal middle of the said table H. Fig. 39 is a side elevationof the separating-table H. F ig. 40 is a longitudinal section of theseparating-table H, taken on the line 46 46, Fig. 38. Fig. 41 is adetail side elevation of a gimbal-bearing 0. Fig. 42 is a detail topview of a trunnioned-ball track-plate. Fig. 43 is a detail top view of atrunnioned-ball' track-plate, showing balls 0 in the annular groove yFig. 44 is a detail top view of a bearing-frame. Fig. 45 is a detailside View of a trunnioned-ball track-plate. Fig. 46

is a detail top view of a trunnioned-ball.

trackplate, showing the annular groove g without the balls 0 Fig. 47shows a detail view of a piece of matting m. Fig. 48

ri es of varying lengths.

The frame A carries secured thereto or in working connection therewiththe various parts and combination of parts hereinafter fully described.

Mounted in journal-bearings is, secured to the front end of the frame A,is the'drivingshaft L, carrying secured thereto the drivingpulley M andbalance-Wheel N. Firmly sereiplresents a part of the table J fitted withcured to one end of the said drlvlng-shaft L is a'bevel-piniongfl'whose'teeth intermesh with those-of a bevel gear wheel g, which is secured toa shaft-K, mounted and working in bearings k k k k k k, secured to oneside of the frame A.

Atsuitable points on the shaft K are secured eccentrics Z Z 1, eachperforming duties hereinafter set forth. At other suitable points on thesaid shaft K are mounted and secured a number of three-way cam devicesX, each performing similar duties of agitation of certain parts of themachine, more fully hereinafter explained. The said shaft K also carriessecured thereto, near its rearward end, a ste ,c0ne ulley' k embracing,by means 0 the hel 1;, a similar but reversely step-coned pulley h,secured on the countershaft P, journaled in bearings secured to theframe A. The said countershaft P carries secured thereon an eccentric W,whose office will presently be described.

Describing the various metal-saving devices in the order of descent,this being the path of the more valuable parts of an ore undertreatment, the rocker-box B is supported-at three points -1pon devicessecured to the frame A. To the under side of the said rocker-box B, nearits forward end, transversely midway, is secured the capplate p of theball-bearing O. The said capplate p is provided on opposite sides withdownwardly-projecting blocks p p, which are made to serve as half-boxbearings resting on corresponding trunnions projecting laterally fromthe ball-bearing cap 19, which on its under surface is circularlygrooved, that serves as guide and track for a series of balls 0 uponwhich the said bearing-cap p rests, thesaid balls 0 being supported by abearingblock p similar in construction to the said bearing-cap p, butpresenting its reverse side up, while its oppositely-projectingtrunnions are disposed at right angles to those of the bearing-cap p.The base-plate p is similar in construction to the cap-plate 72 but its0 posing upwardly-projecting half-boxes are isposed at right angles tothe half-boxes on the said cap-plates 10 The said baseplate is securedto a cross-beam of the frame A, and as a further security to preventdislacement of the parts comprising the be] -bearing 0 a king-pin 0 isprovided and centrally secured to either the bearing- -ap p or to thebearing-block 12 This construction of ball-bearing support permits therocker-box B to tip in any direction while it XIO is at the same timedescribing an arc with its free rear end, to which a variety of motions,suitable to the character of ore under treatment, may be imparted by theadjustment and arrangement of parts now to be described.

The rocker-box B may be made less in Width at its forward end than atits rear end,

as shown, the rear end being preferably a casting to which the sides andbottom of the said rocker-box B are secured. An extension of the medialplate of the said casting to-;

from its under side, a stud terminating in a.

spherical end 6, which forms the inclosed part of a ball-and-socketjoint, which .by means of the connecting-rod 2', connected and ivoted t0the vertical angle of the bellcran lever t", pivoted to an ear-platethat is an extension of the roller-plate y, the lateral angle of thesaid bell-crank lever ivoted to the vertical connecting-rod l, W oselower extremity is secured to the strapinclosing the eccentric Z on theshaft K, through which system of connecting-rods, bell-crank lever, aridball-and-socket joint motion is conveyed from the shaft K to the saidrocker-box B. Diagonally-disposed gratin neath which and surroun ing thesame is a box-chute s contracted at two opposite sides in order toinsure the delivery of all of the passing pulp within the rocker-box Cnext below. Secured to bosses that .are

downward extensions of the uide-boxes b, one each side of the saidbox-dilute 8 are secured the arcs b", whose radial point is the verticalcenter of the ball-bearin 0. These arcs I) each rest on a roller-bearingY Y secured to the top of frame A, the axes of the rollers of the saldroller-bearingsYor Y being radial with the king-pin 0 of theball-bearing O. The base-plate of the roller-bearing Y is extendedforward and furnished with ears, within which is pivoted the bell-cranklever '11. The arcs b may be given any desired angle from thehorizontal, with the result that when the free end of the rocker-box Bis laterally actuated through the ball-and-socket joint e and itsconnections the free end of the said rocker-box B will be moved inconformity with whatever angle is possessed by the arcs b", an u wardangle of the said arcs 1) im arting to t e free end of the said rockerbox B a synclinal motion, a downward angle of the said arcs b giving thefree end of the said rocker-box B an anticlinal motion, and by attachingarcs b", one possessing an 11 ward the other an equal downward angl d,the rocker-box B will be maintained transversely horizontal; but thelateral movement of the free end of the said rocker-box B will be up anddown an inclined plane, thus imitating some of the movements of aminer's pan in skilful hands.

Operating within two guide-boxes b, one on each side of the rocker-boxB, are blocks 1) of wood, rawhide, or other suitable material, to theinner ends of which are secured chains (1, which are maintained taut bmeans ofsprings-s attached, one for eac S constitutes the floor of thesaid castin immediately beblock b to the adjoining side of the frame Aand connected by a threaded nut and tensionrod 8 one each of the saidtension-rods 8 being suitably connected to one each of the outer ends ofthe said block b thus making each chain (1 independent in actionof theadjacent chain (1. This construction er- 'mits a rocking, a lateral, orother desired.

movement of the rocker-box B without unduly straining. any ofthecoimected operating parts. In near proximity to the said chain (1 areother chains (1 preferably arranged a'little above and between theresilient chains (1, these said chains d being secured to the innersides of the rocker-box B in-sucha manner that the said chains (1 artakeof all the movements of the part 0 the rocker-box B to which the saidchains d are attached. This arrangement of chains (i and (1 permits of asawing action between the two sets of chains (1 and d, as well as ashearin action between the resilient stationary c ains d and thediagonally-slotted gratings S, effectually disintegratin lumps of clay,earth, or gravel that would otherwise go to waste with their containedvalues. At the extreme lower edge of the said rockerboxB is a curveddepression I), which is d( signed'to catch and retain any possiblyescaping large lumps of valuable metal,while permltting the lighter andworthless material to pass over and on to the conveyer-chute F, which bybein suitably agitated, by means hereinafter exp ained, will pass downand to waste. I

All of the material that has passed through the grating S is dischargedinto the rocker-- box 0 next below the rocker-box B. The operation ofthis rocker-box C is similar in most respects to that of thehereinbefore-described rocker-box B. The grating S is finer and thelower layer of chains d are all connee-ted to one block b? on one sideand to a similar block b on the other side, each block working in theguide-boxes b Tension tending to pull the said blocks 1) b away fromeach other and keeping the said chains (1 taut is obtained by means ofthe yokesfff, one for each block B each yokef terminating outwardly in asingle threaded rod each fitted with a nut f the threaded rod of eachyoke f passing through a hole in the upper end of aspringf, whose lowerpart is secured to a part of the frame A. Other chains (1 are secured tothe inside of the rocker-box G, extending from side to sideapproximately parallel and quite close to the lower chains (1 Thegrating S in'the casting that constitutes the delivery end of therocker-box C is made finer in order to further reduce and sort thematerial under treatment. the said casting extendin forward under thefloor of the said rockerox C and carrying, projecting downwardtherefrom, a stud e whose spherical termination is suitably inclosed toform a ball-and-socket joint connected by rod i to the bell-crank leveri pivoted to an ear-plate 11 secured to the frame A, thelaterally-projecting angle of the said bell-crank lever being pivoted tothe upper end of the connecting-rod P, which connects at its lower endwith the eccentric Z secured to and operated by the shaft K.

Beneath the grating S, surrounding the openings thereof, is a box-chutethat serves to deliver passing material into the receiving end of theflexible-bottomedv box D. Projecting downward from the guide-boxes b arebosses to which are secured the arcs b b that rest on roller-bearings YY, the axial lines of the rollers thereof crossing at the center of theball-bearing O, which supports the forward end of the said rocker-box C,the said ball-bearing 0 being in all respects like the ball-bearing 0already described. The arcs b can be made to perform the same functionsin every way as those b, previously described.

The lower extremity of the rocker-box C is provided with a curveddepression b which serves to catch and retain metal heavier than itsgangue any material passing over falling onto the agitatedconveyer-chute G and by it conveyed to the tailings-dump at the rear endof the machine.

The flexible-bottomed box D is. like the two rocker-boxes B and C,supported at its higher forward end by a ball-bearing 0 constructed andoperated as those 0 and 0 except that the base-plate p is provided witha rearward extension If, so made as to serve as a triple bearing for theconverging ends of three cone roller-shafts t", whose diverging ends arejournaled in bearings c, secured to and supported by a bar e, which issecured to the frame A. Each shaft i carries secured thereto a cone-rollT of increasing diameter toward the rear. Each shaft i also carriessecured thereon a disk e", located near the rearward bearings 6 Thesedisks 6 serve as fenders and protect to some extent the journal-boxes efrom sand and grit. The vibratory end of the box D rests and rides onthe said cone-rolls T at their largest diameter. About one-half of thelength of the said box D is fitted with a flexible bottom U, of leatheror other suitable material, the sag of which is supported and divided bythe cone-rolls T on which the said flexible bottom U rests. The saidflexible bottom U is secured to the box D at its discharge end by beingclamped over the curved edge of the track of the said box D and held inplace by a curved strap b, secured to the edge of the said track byscrews. the

forward edge of the said flexible bottom U, be-

ing secured to the floor proper of the said box D in any suitablemanner. The lateral edges of the said flexible bottom U are alsosuitably secured to the sides of the said box D and then coveredbyplates t, of suitable material, and secured by screw or bolts. Theofiice of the plates t is twofold: to hold the flexible bottom U down atthe sides and also to afford a means of securing superlyingsupplementary bottoms, such as cocoa matting, gunny-sacking, or otherfabric suitable for the character of metal it is desired to save.

When treatin ores carrying platinum-dust, it is sometimes e'sirable thatthe flexible bottom U and its superlying fabric should be operated belowthe surface of a tank of water, in which case a tank V is built uparound the said box D, butwithin and secured to the frame A. Lateralvibratory movement is given to the rearward part of the box D by a studand ball secured to the said box D, inclosed by a socket e connected bythe rod 6 to bell-crank lever i, pivoted to ear-plates j, secured to theframe A, the other angle of the said bell-crank lever i being connectedto the upper extremity of the connecting-rod Z whose lower endisconnected to the eccentric I, which is secured'to and operated by theshaft K.

When using matting or the like on the flexible bottom U of the box D, itis carefully removed from time to time and another substituted, the oneremoved being thorou hly rinsed in a tank of clear water, the fineplatinum and gold dust being thus removed when the said matting is readyfor reuse. Any material passing over the lower edge of the box D willfall on the separating-table H, a portion of whose bottom is fitted witha fine perforated screen h, of such number of mesh per inch as will besuitable for the ore being treated. The material passing throu h thesaid screen it is delivered, by means 0 a short chute n, to theamalgamating-pan E.

Secured to a cross-beam of the frame A at its extreme rear end .is asupport consisting of a plate (1 carrying a horizontal projection orstud g that is fitted for and holds I sus ended therefrom a pendulum-rodQ and ball (1" The said stud '9 also carries suspended therefrom thebight of a chain 9 whose ends support one end of the amalgamating-pan E,the 'ends of the said chain g being secured at points on the rear end ofthe said amalgamating-pan E in any suitable manner.

The pendulum-rod Q and ball q" is made to vibrate by means of twosprings "w w, one each on opposite sides of the pendulum-rod Q, to whichone end of each spring to is attached, the other end of each spring 10being attached to a reciprocating bar w working in guides w, secured tothe frame A, reciprocating movement of the said bar w being derived fromthe eccentric N, connecting by the I rod w with a stud-pin w, projectingfrom the said bar w, the said eccentric W being mounted on and securedto the counter-shaft P, which is made to revolve by a-belt If",embracing one of the steps of the step-cone pulley h, secured to thesaid counter-shaft P,

and a corresponding step of the ste -cone pulley h secured to andoperated by t e shaft K.

The forward end of the amalgamating-pan E rests on a ball-bearing 0supported by gimbals, precisely similar to the ball-bearings O O,hereinbefore described, the caplate n being secured to the under side ofthe oor of the forward art of the frame of the amalgamating-pan the saidcap-plate n by its depending half-boxes resting on trunnions projectingop ositely from the ball track-plate n, which rides on the balls 0, thatrest on the reverse track-plate 11?, provided with trunnions projectingoppositely but at right angles to the trunnions of the track-plate 'n,the trunnions of the trackplate a restin in half-boxes projectingupwardly from the base-plate n, which is secured to a cross-beam of theframe A.

The principal part of the space between the sides 0 the amalgamating-panE is occupied by a concave pan made of materialsuited to thenhemical orother operation it is desired to perform within the said amalgamatingpanE. The depression constituting the floor of the said amalgamating-pan Eis represented in the drawings as being a longitudinal cylindricalconcavity in the direction of the longer dimensions of the machine; butthis said concavity may be of any desired contour.

The free or vibratory end of the amalgamating-pan E is actuated throughthe medium of an elastic buffer composed of a plate g secured to theoutside end of the said amalgamating-pan E, a sliding block m" residingin a rectangular recess within the face of the said, buffer-plate g, thesaid slidin block m" being maintained normally centra by two s rings mone at each end of the said bloc m", the said springs m abutting II].the inside walls of the ends of the rectangular recess within which thesaid block m works. Two arallel ins or suitable length are firmly secureto the outward face of the block m", which with the other partsmentioned are retained in working position b a slotted cover-plate mwhich is kept in p ace bv screw-bolts h the slot in the said saicover-plate m- -being of suflicient width and len th to permit of amplemovement of the 5 block m and pins lengthwise in the said rectangularrecess. The two pins 9 straddle the pendulum-rod Q, so that when it iscaused to swing the connected end of the amal amating-pan E is inducedto. swing also; ut because of the yielding connection next precedingdescribed, of pendulum-r0 Q to amalgamating-pan E the momentum ofmercury or pulp, or both, within the said 'amalgamating-pan E isovercome with a gen tle force that in the use of mercury assists in theprevention of ftlouring, and in concentrat on such a yielding change ofdirection of movement contributes to the non-disturb material previouslyformed. In furtherance of this desideratum the rate of vibration of theamalgamatingan E isnot dependent on the speed of the ot er parts of themachine, inasmuch as the belt I) may be shifted from one step of thestep-cone pulleys h and h to another step thereon, and thus adjust thespeed of the shaft P, with its eccentric W and connections, to the rateof vibration of pendulum Q, that has been determined by raising orlowering the ball in accordance with the operators judgment as to thepro er speed for the best results upon the ore un er treatment.

Any valuable mineral remaining in the sands that pass out of theamalgamating-pan E will fall onto the agitated conveyer-chute I and byit be conveyed to the concentratingtable J, which being suitablyagitated and fitted with rifHes of any desired form and arrangement, theform shown in Fig. 49 being transversely-placed bars 3 and 3* of varyinglengths, se arates the heavy sand from the lighter sand and deliversthem separately by old and well-known methods onto the chute c, whichbeing divided into two compartments by theribs n prevents remixture ofthe sands that have been separated on the said table J.

The conveyer-chutes F G I and concencrating-table J are su ported,maintained in position, and agitate by similar devices and means. Theconveyer-chute Fis on its nether side fitted with two cross-bars r,placed transversely and at suitable and convenient distances from theends of the said conveyer-chute F. The ends of the said crossbars 1"project beyond the sides of the said conveyer-c iute F, and each of thesaid projecting ends carry, secured to its under sides, the cap bearingplate of a dumb-bell support R.

The ca -plate 1" and the base-plate r of a dumb-bell respects, thecenter of each plate 1' bein concave and serving as'the socket for one othe spherical ends of the dumb-bell pin 1", which is retained in placeby a mediallybi sected retaininglate r 1*", which maybe kept in. lace byt e same bolts .or screws that secure t e plates 7 The use of thesedumbbell sup orts R for supporting theconveyerchutes G I andconcentrating-table J ermits of limited movement in a variety 0directions, the limits of lateral movement being determined by the throwof the bell-crank levers connectin the same with the saidconveyer-chutes and table J in manner hereinafter described.Longitudinally the said conveyer-chute F is maintained in no er positionby a link m, the forward. end of whlch. is pivoted to a cross-beam ofthe frame A and the rearward end of the said link m pivoted to the underside of'the said conveyer-chute support R are precisely alike in all F,by which form of connection the said conveyer-chute F will be given ashort forward jerk corresponding to the radius and are described by thesaid link m in its movement.

Mounted upon and secured to the shaft K are several three-way camdevices X, by which three complete in-and-out reciprocal movements aremade for each revolution of the said shaft K, as will be seen byreferring more particularly to Figs. 31 and 32 of the drawin s herewith.

Firm y secured to the shaft K is the threeway cam its peripheralextensions acting against the parallel bars 0 0 that are rigidlymaintained at the proper distancefrom each other by the two rods 0 0 Theparallel bar 0"" is midway of its length constructed to form a pivotedjoint with one end of a connecting-rod. The rods 0 c in addition totheir service as space-bolts for the parallel bars 0* 'c also serve asvertical guideways a 0 one of which guideways c is integral with thelower part of the journal-box 15 the other guideway 0 being integralwith the upper part of the said journal-box k and extension of the lowerpart of the said journal-box k projects under a beam of the frame A, towhich it is bolted. The journal-boxes k k k k being precisely similar inconstruction and use, the foregoing description of one suffices for theother three.

The three-way cam devices X on the shaft K are arran ed in pairs inrespect -to the throw of the iigher points on the peripheries of thesaid cam 0 the connecting-rods 0 0 being actuated by one such pair of,cams 0 set to throw in one direction at the same instant, the connectingrods 0 0 being actuated by another pair "of cams 0*, both set to throwat another instant of time, the connecting-rods 0 0 being actuated byanother pair of cams c bothset to throw at another instant of time, andthe connectingrods a 0 being actuated by another pair of cams 0', bothbein set to throw at another instant of time,"eac h pair of cams cthrowingbat the same instant and each pair of said cams c" throwing at,a different moment of time from that of any of the other pairs of camsc. v

The connecting-rod c ispivoted at its lower end to the upper parallelbar c and at its upper end to the laterally projecting angle of abell-crank lever a", pivoted to an ear-plate 6 secured to the frame A.Thevertioal arm of the said bell-crank lever is pivoted to a short rod,whose other end is pivoted to the ear-plate 0 secured to the side of Theconnecting-rod c is pivoted at its lower end to averticallyreciprocating parallel bar 0, operated by a three-way caml cand which is set to move in the 'same direction at the same instant asthe next preceding described came with its connections, the upper end ofthe said connecting-rod 0 being pivoted to the lateral arms of abell-crank lever 6 pivoted to earplate 6, secured to the frame A. Thevertical arm of the said bell-crank lever 6 is pivoted to one end of ahorizontal rod e whose other extremity is pivoted to an earplate 0secured to the under side of the conveyer-chute F.

The actuating mechanism of the conveyerchute G is precisely similar inall respects to that of the conveyer-chute F just described theconnecting-rod oi, connecting the cam c, actuating reciprocating parts,with the laterally-projecting arm of the bell-crank lever u, pivoted tothe ear-plate 15 secured to the frame A, the vertical arm of the saidbell-crank lever u, pivoted to one end of a short rod, whose other endis pivoted to the ear-plate t secured to one side of the conveyer-chuteG, and the connecting-rod c conjoining the reciprocating parallel bar c"of an actuating three-way cam 0 with the horizontal arm of abell-cranklever pivoted to an ear-platey", secured to the side of a beam of theframe A, the vertical arm'of the said bell-crank lever being pivoted toa con necting-rod that extends under the said conveyer-chute G and therepivoted to an earplate secured to the under side of the saidconveyer-chute G, which is supported by and rests upon dumb-bellsupports R, whose base-plates are secured to and rest upon the frame A,the cap-plates of the said dumb-bell supports R being securedto thelaterallyprojecting bars r transversely secured to the ,under side ofthe said conveyer-chute G in' the same manner and for the same purposeas those r secured to the conveyerchuteF previously described.

The conveyer-chu-te I derives motion from three-way cam devices Kthrough pivoted connecting-rods c and 0 to bell-crank levers i 11,pivoted to ear-plates t f, secured to the frame A, the said bell-cranklevers i i transforming the vertical movement of the rods 0 e to thelateral movement required by the said conveyerechute I, which isprovided with ear-plates 7' 7' secured to one side thereof and pivotedto and with horizontal rods connecting the said bell-crank levers i, ito and with the said ear-plates j in the manner and performing functionsprecisely similar to the connections of the conveyer-cliutes F and Gpreviously described. Cross-bars r 1' are provided and secured to thenether side of the said conveyer-chuteI, the end of the said cross-barsr r projecting beyond the sides of the said conveyer-chute I andcarrying secured to each said pro ecting ends on the under sides thereofcap --plates r of the dumb-bell supports R, each with its pin 11 andbaseplate 1" secured to the frame A. A link m, pivoted by one end to theframe A and by the other to the under side of the conveyerchute I,maintains the said conveyer-chute in its proper longitudinal position.On the floor of the said conveyer-chute I is a guidedam gf, which may beso placed as to direct the descending pulp upon the concentratingtable Jat one side or the other, as desired.

The separating-table His supported and agitated differently from thechutes and table already described, in that the dumbbell supports R areplaced at the longitudinal middle of the said separating-tableli, eachsaid dumb-bell support B being set on and secured to cross-beams of .theframe A, suitably located to properly balance the said separating-tableH, secured to the under side of which is a projecting lever a theprojecting end of which is fitted for and pivoted to the topmost end ofa short rod 0 whose lower end is pivoted to one of the parallel bars 0of the three-way cam-movement X on the shaft K. This particular threewaycam-movement X performs double duty, in that the rod 0 above and the rod0 below are each actuated by the one three-way cam-movement X, the lowerparallel bar being a duplicate of the upper parallel bar, having pivotedconnection with the rod 0 as well as with the rod 0 IVhen using'thedumb-bell supports R in place of the roller-supports Y and arcs b or thesynclinal or anticlinal arcs it is desired to be described by the freeends of the rocker-boxes B or C may be determined by the angle at whichthe dumb-bell pins 1 are placed under the said rocker-boxes B or C.

When it is desired that any of the dumb.- bell supports R shall serve asstuds immovable at bottom, the half-plate 1- on the baseplates 7"" ofthe said dumb-bell su ports R are made to fit and press so tightfy on'the lower spherical ends of such dumb-bell pins r as are desired torigidly remain in a fixed position.

Having thus described the parts of my invention in detail, the practicalworkings of the same would be: that material to be treated is firstintroduced into rocker-box B, together with enough water to make itfreemoving where it receives the action of the said rocker-box, and anyLumps of clay or cemented material is caught and disintegrated by theshearing action of the chains (1 and ll. The coarser particles and wastematerial are carried off to the tailings-dump through chute F. The finerparticles dro) through the gratings s of the rocker-box into box C,where they receive the action of box C and the chains (1 and cl, andwhere another separation is made any particles of valuable metal toolarge to pass through the gratings, and yet having more specific gravitythan the waste, would be caught in the pocket b and the waste passingoff through chute passing through the gratings s in the bottom of box Cinto box D, where they receive the action of that box and its flexiblebottom, the particles having the greater specific gravity being caughtin the coarse fabric, such as matting, which matting is from time totime removed to be cleaned and another piece put in its place while thefirst is being rinsed in clear water, when it can be again used, thecoarser material and that having less specific gravity passing over theflexible bottom onto a separating-table H, where it is sized by screensin the floor of this table, and passing from there through chute n tothe amalgamating-pan E, where amalgamation takes place by using mercury.If found necessary to securethe results desired from the material undertreatment, other chemicals may be used in the said pan E, the tailingspassing from the amalgamating-pan E into the agitated conveyer-chute Ito be conveyed to the concentrating-table J, where the final separationof such particles of material as have but a slight difference in theirspecific gravity is made by the riffles, the tailings passing to thetailings-dump through chute c and to waste.

Some ores can be successfully treated by one or two of the separatingdevices of this invention, and other ores and material require all ofthem. The order, as shown, in which the different devices are used neednot be followed; but they may be transposed that is, that theamalgamating-pan E maybe used before box I) or after theconcentratingtable J as required, to better treat the material, someores responding more readily to one treatment than another.

Having thus described my invention, I claim and desire to secure byLetters Patent 1. In combination with a metal-saving machine, apower-driven shaft and an eccentric attached to one end of theconnectingrod, the other end of which is pivoted to the lateral arm of abell-crank lever, a laterallyactuated boxsupported on the frame.provided with grate-openings in its floor, above and near which, are oneor more transverselydisposed chains, each maintained elastically tautand stationary by means of connections at the end of each of saidchains, with resilient supports secured to the frame of -the machine;the vertical arm of the bell-crank lever pivoted to one end of a shortconnecting-rod, the other end of said rod secured to the said box,substantially as shown andset forth.

2. In a machine for separating metal from its gangue, a frame providedwith bearings carrying a power-driven shaft with an operating-eccentric,and a connecting-rod pivoted to the lateral arm of a bell-crank-lever,

G to the tailings-dump, the finer particles the vertical arm ofwhich ispivoted to one 3 5 bearing-r01 end of a short rod inclosing a sphericalstud secured to a rocker-box capable of being re ciprocally actuated andhaving a perforated floor over which, and in juxtaposition there with,one or more resiliently-stationary chains are transversely disposed thesaid chains being connected at each end with blocks-loosely fillingcorresponding holes in each side of the said rocker-box, the exterior 1oends of each of the said blocks connected to rods whose outer ends arethreaded and provided, each, with a nut by which connections and tensionis maintained with springs secured to a stationary part of the frame ofthe 5 machine in combination with other chains arranged adj acently overthe said resilientlystationary chains but secured to and moving with theinside of the said rocker-box to which the end of the said adjacentchains are 2 attached, substantially as and for the purpose hereinbeforedescribed.

3. In a machine for saving gold and platinum from gangue, thecombination of a rocker box pivoted at its higher end in such a manneras to admit of'tilting in any direction, and actuated by a power-drivenshaft with an operating-eccentric, and a connecting-rod pivoted to thelateral arm of a bell crank lever, the vertical arm of which is piv- 3oted to one end of a short rod, the other end with radial lines from thecenter of the said rocker-box, with a series of chains stretched betweensprings secured to oppo' 4 site stationary parts of theframe of themachine, the said series of chains superposed over gratings in the floorof the'said rockerbox, other chains being secured to the inner sides ofthe said rocker-box and disposed approximately paralleland' adjacent.;to the said resiliently-stationary chains, as and for] thepurposesubstantially as described.

4. In a machine for saving gold and platinum from ga'ngue, a boxconsisting-of a bottom, one upwardly-projecting end and two sides, thefloor of the said bottom composed in part of flexible material, the sagof which rests on radially-dis osed rolls converging toward acentrally-p aced bearing support- ;5 ing the higher end of the said box,the said bearing secured to the under side'of the said box and to theframe of the machine in such a manner as to permit of rotative movementof the said box in the plane of its Bottom and of that of the top'linesof UB6 said radiallydisposed rolls whose said conver ing ends arejournaled in bearings secured to a part of the said frame of themachine, the lower end of the said box caused to laterally vibrate by swhose axial lines are coincident lV- oted bearing supporting the higherend 0 thea power-driven shaft, with an operating-eccentric, and'aconnecting-rod pivoted to the lateral arm of a' bell-crank lever, thevertical arm of which is pivoted to one end of a short rod, the otherend of said rod inclosing a spherical stud secured to the saidrockerbox, substantially as and for the purpose shown.

5. In a machine for recovering gold or platinum from its associatedgangue, the combination of a box consisting of three upwardly-extendingsides secured to a bottom consisting in part of flexible material, thesag of which rests on and is supported by, a number of radially-disposedconical rolls whose peripheral longitudinal lines and axes convergetoward the pivotal bearing supporting the higher end of the said box,the said rolls j ournaled at their converging ends to abearing securedto the frame of the machine, and at their diverging ends journaled tobearings secured to a cross-bar secured to the said frame of themachine, the said box provided on its two opposite, inner sides, each,with a detachable plate which serves as a clamp for detachably securingthe opposite edges of supplementary superlying removable flexiblebottoms, the free end of the said box be- .ing laterally vibrated by apower-driven shaft with an operating-eccentric, and a connecting-rodpivoted to the lateral arm of a bell-crank lever, the vertical arm ofwhich is pivoted to one end of a'short rod, the other end of said rodinclosing a spherical stud secured to the said rocker-box, substantiallyas described. 3 6. In a machine for winning gold and platihum fromgangue, a boxsuppo'rted at its higher art by a pivotal bearingconnecting the sai box with the frame of the machine in such a manner asto,perniit'the free; end of the said box to swing laterally, the extremefree end of the said b'ox carrying a curved bar on the arc of a circle,whose radius is the center of the said pivotal bearing, the said curvedbar provided on its peripheral edge with a clamp-strip of thesamecontour, and detachably secured by screws to the said peripheraledge in such a manner as to securely clamp and hold one edge of aflexible sheet whose other edges are secured to inside parts of the saidbox, apart of whose floor is cut away and substituted by the saidflexible sheet, the sag of which is supported and divided by a number ofconical rolls whose axes meet at the center of the said pivotal bearing,the converging ends of the axles of the said conical rolls journaledin'a bracket secured to the frame ofthe lna ihine, the diverging ends ofthe axles of the said rollsjournaled in bearings secured to a, barconstituting a part of the frame of the machine, the rearward part ofeach conical-roll axle, immediately forward of its bearing,. carryingsecured thereto a fender-disk that protects the bearing bei bind, apower-driven shaft with an eccentric, and a connecting-rod pivoted tothe lateral arm of a bell-crank lever, the vertical arm of i which ispivoted to the end of the short rod,

the other end of said rod inclosing a spherical stud secured to the saidrocker-box, substantially as shown and set forth.

7. In a machine for winning gold and lati num from gangue, incombination with a power-driven shaft with an operating-eccen tric, anda connecting-rod ivoted to the lateral arm of a bell-crank ever, -thevertical arm of which is pivoted to one end of a short red, the otherend ofsaid rod inclosing a spherical stud secured to an inclined,threeslded box pivoted at its higher under side to a median centralbearing secured to, and supported by, the frame of the machine, the freeend of the said box provided with suitable mechanism for causing it tobe laterally vibrated, the said free end of the said box resting andriding on a number of rolls that are radial with the center of the saidrolls journaled in a bracket secured to the frame of the machine, thediverging ends of the said rolls journaled in bearings secured to across-bar of the frame of the machine, the rearward part of the bottomof the said box consisting of flexible material suitably secured by itsedges to the said box, the sag of the said flexible material riding onand divided by the said radially-disposed rolls, the said box, centralbearing, rolls and flexible bottom operating below the top level of atank that may be filled with water wit-h or without chemicals,substantially as and for the purpose shown and described.

In a machine for winning metal from gangue, a separating-table whosefloor is bounded on three sides by upwardly-extending walls, the saidfloor supported by two dumb-bell supports located longitudinally median,near the nether end of the said separatingtable, the base plates of thesaid dumb-bell supports secured to a cross-beam of the frame of themachine, a )erforated screen secured and located over a boxchute that isarranged to discharge into another metal-saving device below, the saidseparating-table terminating, at its lower end, in a bifurcatedwaste-chute for carrying to waste i all material too coarse to passthrough the holes in the said perforated screen, the sides of the saidseparating-table made to vibrate verticallv by means of a transverse barsecured to the under side of the said separatingtable and projectingbeyond one of the sides of the said separating-table and connecting withthe top end of a vertical rod whose lower end terminates by a pivotedconnection with one of a connected pair of parallel bars between whichis a three-way cam secured 1 to the longitudinally-journaled and frame?-I supported shaft which derives rotary motion from a bevel gear-wheelsecured to one end thereof, the said bevel gear-wheel having 1 teeththat intermesh with a bevel-pinion secured to one end of atransversely-journaled, frame-supported driving-shaft carrying securedthereon a balance-wheel and drivingpulley, the rotation of the saidthree-way cam giving three equal, u anddown movements to the saidparalel bars and connected separating-table for each revolution of thesaid longitudinal shaft, substantially as described.

9. In a machine for winning metal from gangue, an amalgamating-panpivoted near its lower, discharge, end to a ball-bearing, the twotrack-plates of which are each oppositely trunnioned and mounted at'right angles to each other, one journaled to a ball-bearing framesecured to the under side of the said amalgamating-pan, the other saidtrackplate having its oppositely-projecting trunnions disposed at rightangles to those of the adjacent track-plate above and separated by aseries of ballsworking in an annular groove in each said track-plate,the opposite trunnions of the lower said tracke plate journaled inhalf-box bearings projecting upward from the ball-bearing baseplateframe which is secured to a cross-beam of the frame of the machine, thehigher, swinging end of the said amalgamating-pan supported by a chainwhose ends are secured, each, near opposite corners of the saidamalgamating-pan, the middle of the said chain forming an apex to whichconnection is made to a sleeve inclosing and working on a studprojecting from the frame of the machine, the said stud also carryingpivoted thereto the upper extremity of a pendulumrod whose lower partcarries a ball adjustable vertically thereon and secured by a setscrew,the said pendulum-rod being embraced by two pins projecting from aresiliently -secured block inclosed within a box-base secured to therear end of the said amalgamating-pan the floor of which iscylindrically concave in the direction of the length of the machine. thefree end of the said amalgamating-pan caused to swing with the saidpendulum-rod by its already-described resilient blbck with its twoprojectingpins embracing the said pendulum-rod to which a vibrating,movement is given by means of a coiled spring secured at its middle tothe said pendulum-rod the ends of the coiled spring secured to a slidingbar working transversely in ways secured to the frame of the machine,the said sliding bar pivoted to one end of a connecting-rod. the otherend of the said connecting-rod being connected to the strap of aneccentric secured Ioo

